Outboard to inboard conversion unit



June 22, 1965 R. H. MEIBAUER 3,190,254

OUTBOARD To INBOARD CONVERSION UNIT Filed May 18, 1964 2 Sheets-Sheet 2 INVENTOR.

ROBERT H ME/B/FL/ER HTTORNEY United States Patent ""ce r 3,190,254 QUTB'UARD TG INBGARD CGNVEESEGN BN1? Robert H. Meilaaner, 25 Windy Hollow Way,

' Staten island, N.Y. Filed May 18, 1964, Ser. No. 363,668 15 Claims. ((13. 115 -5) This invention relates to the conversion of outboard motors to inboard motors by the use of conversion plates,

mounted on the hull so that the plates can be utilized for converting numerous types and styles of outboard motors to the inboard mounting,ithereby avoiding the necessity of having independent conversion plates for each outboard motor style or design.

More particularly, the invention deals with the provision of an exhaust system assemblage mounted in connection with the power head conversion plate of the'unit and in connection with the hull for discharge. of the exhaust gases. Still more particularly, the invention deals with an assemblage, wherein the circulating cooling water of the unit is passed around the exhaust assemblage in cooling the exhaust gases. 7

The novel features of the invention will be best understood from the following description, when taken together with the accompanying drawing, in which certain embodiments of the invention are disclosed and, in which, the separate parts are designated by suitable reference characters in each of the views and, in which:

FIG. 1 is a diagrammatic sectional View through the version plate looking generally along the line 44 of FIG. 1 and showing the motor'drive shaft as well as the mounting or coupling screws in section.

FIG. 5 is a top plan view of thewater pump and gear case'conversion plate detached. i v

FIG. 6 is a bottom plan view of one end portion or" the plate shown in FIG. 5.

FIG. 7 is 'a partial section along the line 77 of FIG. 4; and

I FIG. 8 is a section along the line 8-8 of FIG. 4.

In FIG. 1 of the drawing, 1 have indicated diagrammatically at 10 the lower or base portion ofany type and kind of power head. At 11 is-shown the power head.

conversion plate which may be defined as the upper 'or inner plate. At 12 is shown thewater. pump and gear. case conversion plate, these plates being secured to each other and to the hull 13 in any desired manner and, in

the showing in FIG. 1, one of the coupling screws is shown illustration, four other coupling screwsar'e illustrated T at 14. However, in turning to FIG. 4, for clarityiin the in section at 15. In this connection, it will be under stood that, with "dififerent'types of power heads, the plate 11 will be fashioned to properly locate the coupling head with respect to both of the plates 11 and 12.

The hull 13, or at least that part of the hull 'in connection with which the unit is mounted, will include an aluminum plate 16, plus an asbestos gasket17 on the inner surface of the hull 13, and on the lower surface of the hull is an aluminum plate 18 and ,a neoprene gasket 19.-

Turning now to FIG. 4 of the drawing illustrating a plate has a generally oblong rectangular portion 20, with a reduced olfset 21 at one side thereof. The portion includes, atone end, a large aperture 22, through which the drive shaft 23 from the power head passes, the aperture being sufiiciently large for proper location of the shaft of different power heads. The shaft 23 only is shown in section in FIG. 4 for this purpose.

' inwardly of the aperture 22 is a water intake area 24 diagonally arranged on the plate 11, this area'being exposed through the lower surface of the plate, but communicating somewhere with this area is a-water intake aperture 25 to extend to a suitable circulatingpassage in the head 16, as indicated, in part, in dotted lines at 25' in FIG. 1 of the drawing. 7

Adjacent the area 24, the plate 11 has an irregularlyshaped water exhaust area 26, having a generally triangular-shaped end as, the areas 26, 2'6 opening through the lower surface of the plate 11 and at 27 is shown an aperture communicating with a passage in the power head 10, as indicated in dotted lines. at 27' in FIG. 1.

The area 26 extends into the offset 21 of the plate 11 and this end pq r tion of the area has an exhaust passage 28 which communicates with an exhaust system assemblage 29, note FIG. 2, mounted upon the offset 21 and A passage from the power head, indicated at 31' in dotted lines in FIG. 1 of the drawing. At the other end of the passage 30 is an aperture 32, through which the exhaust gases pass into the assemblage 29, as noted in FIG. 2.

The'plate 10 is apertured toreceive thescrew 14, as ,well as theiscrews 15, as will be apparent from the sectioning of these screws in FIG. 4. The plate 11 also a includesithreaded apertures in the upper surface thereof for mounting of the power head 10 thereon, these apertures being illustrated by the dotted showing 33 in FIG. 4

and two of the screws for mounting the head 1t? being illustrated in dotted lines at 35' in FIG. 1. The plate 11 also has other threaded apertures in the upper surface thereof, as indicated at34 in FIG. 4, for mounting of the base 35. of the assemblage 29 on the plate 11, the screws for this mounting being illustrated at 36 in FIG. 2.

By providing the areas or chambers, as at 24, 26 and 30, the platen adapts itself for use in conjunction with various types and kinds of power heads, at least a wide I range thereof, to place the various components of the head in communication with said areas for transmission of water and the gases from the water pump, later described, to the head and from the head through the as semblage 29, through which the exhaust gases also pass. I The conversion plate 12. has, at one end portion thereof, a downwardly projecting housing 37 terminating at its lower surface ina'fiange portion 38, in connection with. which the gear casing 39 is supported, this casing havingv the propeller 49 at one end, as well as a depending blade portion 41; The propeller 40 operates in a housing sleeve 42 rivetedutotheopp sed" endfportion of the plate 12, as seen at 43 in FIG. 1 of the drawing. Within the housing 37 is'a chamber44, in which the Water pump 45 is positioned, the pump being fixed to the motor shaft- 23, which shaftextends downwardly into'the gear casing 39 for operation of the propeller 49, as with other motors of the type and kind under consideration.

At the lower portion of the chamber 44 is a water ad'- mission chamber as, the housing 37 being apertured, as indicated at 47, for admission of water into the housing by the pump 45 for transmission through a pipe 48 extend- Patented June 22, 1965 ing upwardly through the min-1s and communicating with the chamber 24. Thus, water is admitted into the area 24 for circulation through the power head, asinglicated, in part; at 25, in FIG; 1 ofjthe drawing; The flangeor lower-portion of the housing37 is generally of,

named plate placing all of said areas in communication with a power-head mounted on the upper surface of said first named plate, said first named plate being mounted the contour noted in FIG. 6 of the drawing and this lower portion is apertured to receive screwsr49, indicatediin 1516.11 of the drawing, for mounting the 'casing'39 'in' connection with the plate 12; e it The upper end'of the chamber 44 is preferably flared, as seen at 44, to againprovide freedom of adaptation of the plate 12'to powerheads of difierent constructions The housing 37 has an aperture 50 extending therethrough and through the upper surface of the plate 12 to mourn.

modate the gear control rod 51 of the power head, as clearly noted inFIG. 1 ofthe drawing.

Theplate 12is apertu'red, as seen in 'FIG; 5, at'14f to receive the screw 14; Whereas, the plate hasfour-apertures through which the screws 15, shown insec-tion in FIG. 4 of the drawing, pass in mounting the two plates 11 and 12 securely-upon thehull in'combination with-the screw 14 and other couplingsof this type, and kind can be'employed, if desired. a

Turning now to the exhaust system assemblage 29 shown in FIGS. 2 and3 of the drawing, it will appear porting an outer water discharge tube and an inner gas 1 exhaust tube, means. spacing said tubes one. from the on the interior of a'boat hull and; coupled with the second named plate arranged upon the outer surface ofthe hull," said second named plate including a housing in which a water pump is mounted'and exposed to awater intake chamber in said housing, a transmission'pipe' for transferring pumped water from said'housing into the water intake area of the first named plate, the first'named plate being .apertured for passage ofthe motor shaft of said power head .therethrongh and-into said housing for actuating said water pump, the housing of said second named plate having means supporting a gear casing driven by said motor shaft,'a propeller 'at one end of said gear casing driven by said power head, said assemblage comprising a base coupled. with the'first named plate, the base supotherto form a water circulating chamber between said 7 tubes, the first namedplate being apertured to pla'ce 'said that this system comprises inner and outerspaced tubes 7 a 52 and53, the outer tube 53 having anenlarged or flared end 54 secured in the base 53, as shown in FIG. 2,;tl'ie two tubes being spaced one from the'other,byg suitable spacers 55, the tubes having .angularly offset ends 52 and 53, the end 53'. having a reduced terminal=portiorr 56 which forms a contracted discharge of the water'circulating passage 57 formed between the two tubes where it passes into a bellows-type flexible tube 58 for atomizing:

the Water-exhaust. The exhaust gases pass through the inner tube 52 and'are also discharged into the'fiexible tube 58 and the measure ofwater and gases is" ultimately directed tofittings 59 and 6t), the'fitting 59 being secured of the exhausted gases and -water, and a flexible tube be tween said fittings and discharge ends of said inner and. 7

to the interior of the hull 13; Whereas, the fitting 60 ex-f- .tends to the exteriorof the hull. These fittings can be arranged at any partof the hull fo'riexhaustto atmosphere or, as jnthe present illustration, for exhaust into the when the boa-t is not in operation.

7 water through the bottom of the hull; In thislatteruse, T a

a suitable checkvalve 61.will be provided in the fitting: 59 to prevent backward flow of water through the fittings,

that the spacers will be suitably fixedjto surfaces of at least one of the tubes by welding or otherwise. Q

' 'It is pointed out that, while, the area 30 andthe words, the exhaustsof the products of combustion.

. 52 have been'referred to as gasexhausts, rferericeh'ere? is made to the exhaust from the power headfinother It will be understood that, in a conversion unit of the i character defined, in addition to drive of'the', propeller,

the power head can also be utilized'in running auxiliary equipmennsuch as generators, alternators, bilge pumps,

compressors and the like in the manner. ofusual inboard :motor installations. The foregoing is. especially practical when the conversion motor head is of sufiicient power to care for the runningof auxiliary equipment. -Having fully described my invention, what I: claim as new and desire to-secure by Letters Patent is:

1 An outboardto inboard conversion unit of the char acter defined, comprising a power head conversionsplate,

a water pump and gear casei conversion plate and an exhaust' system assemblage mounted in connection with the first named plate, said first named' platehaving three widely extended areas opening through the lower surface 7 thereof, oneof saidareas comprising a water intake area, a second area comprising awater exhaustarea, the third area comprising a gas exhaust area means' in saidifirst last named chamber :in communication with-the .Water exhaust area of the first named plate, said first named Iplate being apertured' to place the inner gas exhaust tube in communication with'the gas-exhaust area of said first named plate, suitable fittings. on 'the hull for discharge outer tubes.

2. A; unit as defined in claimsl, wherein means is provided for protection of that part of the hull in connection "with which the unit, including said fittings, are. mounted.

A unit as defined in claim 1, wherein the. second named plate includes'means-for supporting a propeller encircling sleeve in connection therewith; g

4. A unit as defined in claim 1, wherein the housing of the second named plate is apertured to receive a gear, controlrod. i

5. A unit asdefinedin claim. 1, wherein said three areas are so positioned on the first; named plate as to adapt said plate .for'use in inboard mounting 'of power heads of numerous designs. 7

head is mounted,

acter defined,ja"power head conversion plate, in connec-l 'tion with which power heads of numerous different de-: a signs are adapted to be mounted, said'plate having three widely extendedareasopening through the lower surface. thereof, onecof said areas comprising a waterintakearea,

a second areaoomprisinga water exhaust area, the third area comprising a gas exhaust area, means inisaid'plateif placing all of said areas in communication with a power head'mounted on the uppersurface of one side portion 'of the plate, the ,other side portion of the plate having 5 i an extension, upon-which an'e'xhaustsystem assemblage is' adapte'd to be mounted, and thesecond and third'areas: projecting onto said extension to place both of:said areas 7 incommunication with, said assemblages V i l 9.- In unitsas defined in' claim 8, wherein said assemw blage includes aninner gas discharge tube, an outer. water discharge tubejspaced with:res pect'to said inner tube, means placing the gas" and water exhaust-areas-of said plate in communication with saidinner and outer tubes,--; and means including fittings mounted in the'hull, of'a beat, inconnection-withwhich the unit is mounted for discha'rgebf said exhausts.

6.:A unit as 'definedin claim 5,1wherein .the support '1 of the exhaust system assemblage on thefirst'named plate" constitutes an extension atone side of that part of the .first' named plate, 'in conjunction with which the power.

. plate, in connection wtih which various power heads are adapted to be mounted, a water pump and gear case con: version plate coupled with said first named plate with a hull of a boat disposed between said plates, said second named plate including a housing supporting awater' pump and a flange portion, in connection with which a gear casing is supported, and means for passing pumped water from said housing to means on the first named plate for introduction into a power head mounted on said first named plate, and said first named plate including means supporting an exhaust system assemblage for exhaust of products of combustion and exhaust water discharged from said power head. a V i 11. In outboard to inboard conversion units of the character defined employing a power head conversion plate, in connection with which various power heads are adapted to be mounted, said plate being mounted upon the interior of a hull of a boat, a Waterpump and gear case conversion plate mounted on the outersurface of the hull and coupled with said first named plate, an exhaust system assemblage mounted in connection with the first named plate, said assemblage including a tube, through which exhaust gases from a power head mounted on the first named plate are adapted to pass, said assemblage including means for circulating exhaust water from said power head around said tube, suitable fittings on the hull of said boat through which the exhausts are adapted to be discharged, and a flexible tubing placing said fittings in communication with said tube and said means.

12. In units as defined in claim 11, wherein said fit tings exhaust into the water in which the boat is operated, and a check valve in one of said fittings.

13. A conversion plate forinboard installation of an outboard power head and an exhaust system assemblage for said power head, said plate comprising an oblong rectangular side portion, in connection with which a power head is adapted to be mounted, a side extension on said plate, in connection with which said assemblage is adapted to be mounted the plate having an. extended Water intake area, an extended water exhaust area and an extended gas exhaust area, both of said exhaust areas being arranged over both side portions of said plate, all of said areas opening through the lower, surface of the plate, and the surface of the plate, in connection with which the power head is mounted, having passages extending therethrough and communicating with said areas to place the Water in-,

take, the Water exhaust and the gas exhaust of the power head in'communication with the respective areas.

14. A conversion plate as defined in claim 13, wherein said plate is apertured to receive the motor shaft of said power head. j

15.,In outboard to inboard conversion units of the character defined, a power head conversion plate, in connection with which a power head and an emaust system assemblage are adapted to be mounted, said plate having an area for admission of water to said power head, an area placing the gas exhaust from the power head in communication with said assemblage and an area placing the water exhaust from the power head in communication with 'said assemblage, and said plate being apertured for passage of the motor shaft of the power head therethrough.

No references cited.

MILTON BUCHLER, Primary Examiner. 

8. IN OUTBOARD TO INBOARD CONVERSION UNITS OF THE CHARACTER DEFINED, A POWER HEAD CONVERSION PLATE, IN CONNECTION WITH WHICH POWER HEADS OF NUMEROUS DIFFERENT DESIGNS ARE ADAPTED TO MOUNTED, SAID PLATE HAVING THREE WIDELY EXTENDED AREAS OPENING THROUGH THE LOWER SURFACE THEREOF, ONE OF SAID AREAS COMPRISING A WATER INTAKE AREA, A SECOND AREA COMPRISING A WATER EXHAUST AREA, THE THIRD AREA COMPRISING A GAS EXHAUST AREA, MEANS IN SAID PLATE PLACING ALL OF SAID AREAS IN COMMUNICATION WITH A POWER HEAD MOUNTED ON THE UPPER SURFACE OF ONE SIDE PORTION OF THE PLATE, THE OTHER SIDE PORTION OF THE PLATE HAVING AN EXTENSION, UPON WHICH AN EXHAUST SYSTEM ASSEMBLAGE IS ADAPTED TO BE MOUNTED, AND THE SECOND AND THIRD AREAS PROJECTING ONTO SAID EXTENSION TO PLACE BOTH OF SAID AREAS IN COMMUNICATION WITH SAID ASSEMBLAGE. 